Silane modified polymers with improved characteristics for adhesive compositions
AssigneesHenkel AG & Co. KGaA, Henkel IP & Holding GmbH
InventorsWu Suen, Andrea Keys Eodice, Claudia Meckel-Jonas, Johann Klein, Christina Despotopoulou, Jan-Erik Damke
Life of this patent
Estimating the term…
Abstract
Disclosed are silane modified copolymers that are moisture curable; curable adhesive compositions comprising the silane modified copolymers; and methods of making the silane modified copolymers.
Claims15
A silane modified copolymer that is the reaction product of an aminosilane and an isocyanate functional copolymer, wherein the isocyanate functional copolymer is the reaction product of a polyether polyol having a number average molecular weight greater than 6000 and an amine based diol containing secondary hydroxyl groups and a cycloaliphatic diisocyanate.
A method of forming an adhesive comprising the steps of:
- a) forming a mixture of different isocyanate terminated prepolymers by reacting a mixture of an amine based diol containing secondary hydroxyl groups, a polyether polyol having a number average molecular weight greater than 6000 and a cycloaliphatic diisocyanate, optionally in the presence of a urethane catalyst;
- and
- b) reacting the mixture of different urethane terminated prepolymers of step a) with at least one aminosilane, thereby forming an adhesive additive comprising silane terminated copolymers.
Dependencies are inferred from the claim text.